Modcan CV Recorder 57B

Modcan CV recorder panelQuantity: 1

From the Modcan B website:

The CV Recorder 57B provides a radical new approach to generating modulation and voltage control signals. The implications for this module are extensive when placed in a modular synthesizer context.

Concept: Combine the ability to record and playback control voltage signal events from standard modules with the tools to shape, mix, loop and time scale these performances in a simple and repeatable manner. A brief list of possible uses for the 57B:

  • Create asymmetric LFO shapes from Joysticks or ribbon controller signals
  • Control panning and VCA parameters for automated mixing
  • Record long analogue step sequence patterns while changing the step voltages and recording the clock simultaneously for later sync operations
  • Combine and chain together random voltage patterns with sequences and LFOs on 4 channels
  • Record envelope shapes and loop them while adjusting the loop start and end points.
  • Perform granular synthesis type effects on CVs using short loops and sweeping the loop points through the sample under voltage control.
  • Record lo-fi audio samples and shift playback frequency in real-time.


  • 20Hz-20kHz Voltage controlled variable sample/playback rate with 1V per octave response
  • 4 seconds of quad sampling @20kHz. Greater than 1 hour @20Hz
  • Quad in/outs with 15 switch selectable channel recording configurations
  • Record and playback simultaneously
  • Rehearse mode for pre-recording experiments
  • Chain multiple samples by recording with different loop points and sample rates.
  • 3 loop modes: Forward, Reverse and Pendulum
  • Panel and voltage controlled Loop start and End controls
  • 3 Playback modes: One shot, Loop and Hold play
  • Gate out provides short pulse at loop start
  • Trigger input for triggering samples when not in loop mode
  • Status Bi-LED indicates various record and playback states
  • Channel LEDs indicate arming of channels for recording.
  • 120MHz DSP processor and 4MB of parallel SRAM


  • Sample rate : 20Hz-20kHz (10 Octaves)
  • Recording Inputs: +/-5V Pk-Pk@100Kohms
  • Outputs: +/-5V Pk-Pk@1 Kohms
  • Other inputs 0-5V @100Kohms
  • Current Requirements: 50mA @ -15V, 200mA @ +15V

Modcan 57b customized panelModifications:

  • Changed knobs to MOTM-style
  • Bruce Duncan-provided power supply connection for off-board +5V

Modcan 57b back


One Response to Modcan CV Recorder 57B

  1. I’m really interested in this and the other Modcan modules in the MOTM format. I love how solid Paul’s core system is but I would like to spice things up with more wild modules. I also MOTMed some Blacet modules with great results.

    Please post more information about this when you get a chance.

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